The Empire is launching a seemingly foolish attack on the Entente Alliance in the middle of winter.  They lack the supplies to successfully invade.  Tanya realizes that this attack is a feint intended to distract from a fjord landing mission.  Sure enough, she is sent to lead the invasion of the fjords, and silence 20 cannon emplacements in time for the fleet to land and the Imperial forces to disembark.
I simply realized that it would be
an effective plan under these circumstances.
إنّما افترضتُ ببساطة أنّها ستكون فعّالة في ظلّ هذه الأوضاع
Ich habe nur angenommen, dass dies
unter den gegebenen Umständen effektiv wäre.
Solo supuse que sería efectivo 
en esas circunstancias.
Solo supuse que sería efectivo 
en esas circunstancias.
J’ai jugé cette stratégie efficace
d’après les informations actuelles.
Ho solo supposto che, date le circostanze,
sarebbe stato un piano efficace.
Meramente assumi o que seria
 efetivo sob estas circunstâncias.
Я просто поняла, что в данных условиях
 десант может принести пользу.